Aleri a



' WITNESSES v wmm AA. Rodgers y A/ A TTOR/VEYS Batented June 10, 1919.

UNITED snrrns PATENT oFFlIoE.

ALERI A. RQDGERS, CF ESTLIIL'SASKATCHEWAN, CANADA.

DISK-SCBAPER.

To all whom it may concern Be it known that I, ALERI A. Rononns, a subject of the King of Great Britam, and a resident of Estlin, Saskatchewan, Dommion of Canada, have invented a new and Tmproved DislcScraper, of which the followlng is a description.

My invention relates to scrapers comprising a blad and shank adapted to be bolted to the upper end of a supporting standard secured to the axle of the disk.

The prime object of my invention 1s to provide a counter-balanced scraper-blade shank so that the weight of the arm will tend to hold the blade to its work against the disk.

More specifically, an object of the invention is to provide a counter-balancing attachment of a form that may be employed in connection with scraper blades and shanks of known form.

Reference is to be had. to the accompanying drawings forming a part of this specification, it being understood that the drawings are merely illustrative of practical examples of the invention.

Figure 1 is a perspective view of a disk plow equipped with scrapers embodying my invention in one form;

Fig. 2 is a detail perspective View on an enlarged scale, showing one disk and my improved scraper attachment;

Fig. 3 is a perspective view illustrating the preferred form of my attachment.

The invention is shown applied to a disk plow of known form including disks A mounted to revolve in the usual manner, there being associated with the disks supporting standards B, the upper ends of which are adapted to receive a pin C held by an eye bolt D, the shank of the usual scraper blade being adapted to be secured to said pin. In the form shown vin Fig. 2 the scraper blade 10 has a shank 11 pivotally secured between its ends by a bolt 12 or the like to the pin C or equivalent supporting means, so that the shank is free to rock on said pivot. The end 13 of the arm beyond the pivot 12 is offset laterally to lie at an angle to the blade and to the forward part Specification of Letters Patent. Pate t d J 10 1919 Application filed flctober 16, 1918.

Serial No. 258,420.

of the shank, and said arm 13 is counter-balanced preferably by means of a slidable box weight 14 thereon, adapted to be secured in fixed position by a set screw 15.

With the described arrangement the weighted arm 13 maintains the blade 10 to its work against the disk A. In the form shown in Fig. 3 the blade 10 is substantially of known form having a short shank 11 secured by a pivot 12% A separate weight arm is employed which is provided by means of a lever 13 pivoted between its ends on the pivot 12 to present a longer and a shorter arm, th longer arm having a weight l4 and set screw 15 corresponding with the similar features in Figs. 1 and 2. The shorter arm 13* of the lever is provided with a hook l6 upturned to engage the shank 11 of the blade and thereby throw said blade upwardly to maintain the blade in working position against the disk under the action of the weight. The weighted lever 18 with its hook 16 is adapted to be employed with scraper blades and shanks of known form to counter-balance the latter. The pivot pin or bolt 12 is provided in the downturned end of standard B corresponding in general with the standard B.

I would state in conclusion that while the illustrated example constitutes a practical embodiment of my invention, I donot limit myself strictly to the mechanical details herein illustrated, since manifestly the same can be considerably varied without departure from the spirit of the invention, as defined in the appended claims.

Having thus described my invention, I

thereon adapted to be pivotally mounted adjacent to a plow disk to position the blade for scraping, a lever pivoted between its ends, and a hook on one arm of the lever engaging the. said shank, the. other arm of the lever being counter-balanced.

3. An attachment for disk scrapers, said attachment comprising a lever adapted to be pivotally secured on a support, adjacent to a scraper shank, and means on said lever to engage the scraper blade shank, said lever being counter-balanced to exelt a leverage on the shank of the scraper blade for maintaining the latter in scraping position.

ALERI A. RODGERS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

